Cable attachment for drilling machines



J. REYNARD CABLE ATTACHMENT FOR DI'ILLING MACHINES Jan, Z0, i925.

Filed web, 12, 1923 lill: an."

Patented Jan. 20, 1925.

UNITED STATES ranger PATENT oFFlcl-z.`

JONAH REYNAED, 0F TIFFIN, OHIO, ASSIGNOR TQ THE LOOMIS MACHINE CO., 0FVTIEFN .0310. v.

CABLE ATTACHMENT FOR DRILLNG- MACHINES.

Application filed February 12, 1923.

To all whom tmay concern:

Be it known that I, JONAH REYNARD, a citizen of4 the United States,residing at Titi/in, in the county of Seneca and State of Ohio, Vhaveinvented a new and useful Cable attachment for Drillingli/Iachines, ofwhich the following is a specification.

rlhis invention relates to an attachment for the main cable of adrilling machine, one ofthe objects ofthe invention being to provide anovel form.` of clamp for gripping the cable and holding it againstmovement relative to the drum or reel about which the cable is wrapped.

lin many forms of drilling apparatus the main cable which carries thedrill is extended over a mast and thence to a guide sheave and to themain reel. A spudding beam is mounted for oscillation and carries awheel engaging a portion of the cable. The drill is lowered to thebottom of the hole and the main reel to which the cable is attached isthen held against further movement. The spudding beam is swungdownwardly and upwardly and7 during each downward movement will producea bend in a portion of the main cable and cause the drill to be liftedfrom its normal position. At this time the weight of the. drill istransferred from the bottom of the hole to the held main reel and underordinary conditions results in the tightening of the coils of the cableupon the reel. When the Spud* ding beam moves upwardly the engagedportion of the cable will straighten out and the drill will drop to itsnormal position, thus relieving the main reel of the weight of the drilland allowing the tensioned portion of the cable on the reel to relax.During the operation of the machine the raising and dropping of thedrill occurs from forty to fifty times or more per minute and as each ofthese operations results in the movement of the coils of the main cablerelative to each other and to the reel the cable quickly generates heatas a result of friction. Consequently the cable will burn out or becomeotherwise badly damaged and considerable loss to the operator results.

It is an object of the present invention. to provide the cable with ameans whereby the rubbing together of the convolutions on the reelduring the actuation of the drill is eliminated.

-Another object is to provide an attach- Serial No. 618,549.

ment of this character which can be installed readily on a drillingmachine and which will not interfere with the necessary paying out ofthe cable as the hole increases in depth.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention consists of certain novel details ofconstruction and combinations of parts which will be hereinafter morefully describe-d and pointed out in the claims.

In the accompanying drawings the preferred formof the invention has beenshown.

ln said drawings.

Figure l is a side elevation of the attachment applied to a drillingmachine and the main cable thereof, said machine and the elevated drillbeing indicated by broken lines.

Figure 2 is an enlarged section on line 2 2 Figure l.

Figure 3 is an enlarged section on line 3 3 Figure 2.

Referring to the figures by characters of reference A designates themain frame of a drilling machine having a mast- B and a spudding beam C.A sheave D is provided at the fulcrum end of the spudding beam andanother sheave E is vprovided at the free end of the spudding beam. Acable F is connected at one end to the drill G and, at its other end tothe main drum or reel H of the machine. This cable, a portion of whichhas been shown by full lines in F igvv ure l is extended under thesheave E and over the sheave D and is coiled about the drum or reel H sothat by rotating the same the cable can bepaid out or taken up to loweror raise the drill preparatory or subsequent to each drilling operation.

The attachment constituting the present invention includes a clampingboard l extending transversely of the machine below and parallel withthat portion of the cable between sheave D and drinn H. vSlidablymounted within the board l are spaced pairs of bolts 2 and these boltsare secured within the end portions of a clamping block 3, there beingnuts 4@ enga-ging the bolts to hold them to the block. Heads 5 areprovided at the lower ends of the bolts and coiled springs (i aremounted on the bolts. These springs bear downwardly on the heads andupwardly against the board l. The cable F extends between board l andblock 3 and the springs 6 serve to bind the block 3 upon the cable sothat it Will be held securely between the block and board.

l The drill G is adapted to be lowered to the surface in which the cutis to be made, cable F being fed between board l and block 3 during thelowering oi' the drill, it being understood that the spndding beam G isin its uppermost position during this operation. The bolts 2 are thentightened so as to increase the compression ot' the springs 6 and cansethe cable to be gripped tight-ly. The machine is then set in motion andeach time the spudding beam C moves downward ly the drill G will beraised while cable F will be held between the clamping members. Thus thecable will not worli on the reel or drum H and the objectionable burningor wearing action of that portion of the cable on the drum will beeliminated.

Whatv is claimed is:

l. The combination with a drinn, a drill actuating cable, and means forshifting the cable independently of the drum to raise and lower thedrill engaging portion of the cable, el' relatively .fixed and movablegripping members, and `yielding means for binding said members npon thecable to hold the cable against excessive movement upon the drinn.

2. In a drilling machine the combination with a main cable, a drinnengaged thereby, and mea-ns for actuating the cable indepeinlently ofthe drum, ci" means interposed between the drinn and said actuatingmeans for holdin@ the cable against movement relative to the drum saidmeans including rela` tively lined and movable members having ay cablereceiving space therebetween and adjustable yielding means for bindingthe members upon the cable in said spare.

ln testimony that I claim the foregoing as my own, l have hereto allixedmy signature in the presence oit two witnesses.

JON AH RE YN Alti). lVitnesses E. M. NnWsoN, C. H. RUNYAN.

